Pain stimulates. It doesn't have to be bushing the dog into fight...it can enhance aggression..you could say it enhances prey aggression and never really goes into defense because the dog is NOT trying to "deflect a percieved threat"...
The dog through enhanced prey aggression is embracing the threat not deflecting it.
Pressure stimulates this.
E-Dog - 2012 WPBTCA National Championships
The time when screech owls and Bandogges howl and spirits walk and ghosts break up their graves.
Act I, Scene IV of William Shakespeare's "King Henry VI"